"It's got this real sexy, powerful vibe to it, and it's just because we're having fun singing it," Gaga said of their latest duet.

"There might be 60 years between me and Tony, but there's no distance between us when we sing jazz."

Gaga continued: "It's really of another time, and I hope with this music we can bring back that sentiment of love, kindness and joy that I'm getting to experience working with him every day. I just want to spread that around the world."